20
16 11 17 13 15 20 12 18 14 19 
20 17 11 12 13 19 16 15 18 14 
20 16 11 19 18 13 12 15 14 17 
11 20 13 16 18 17 15 12 19 14 
17 20 13 16 12 14 15 19 11 18 
13 18 17 11 15 20 14 12 19 16 
18 14 13 12 16 11 17 15 20 19 
12 11 20 14 16 19 18 17 15 13 
11 13 20 12 17 14 19 15 16 18 
12 13 14 20 17 16 15 11 19 18 
7 5 9 10 6 8 3 4 1 2 
6 3 5 1 2 4 10 9 8 7 
8 2 7 5 9 6 1 3 10 4 
3 6 7 1 8 10 2 5 4 9 
3 9 5 6 2 1 4 8 10 7 
5 7 3 2 6 4 1 8 10 9 
1 5 9 7 3 4 8 6 10 2 
7 1 2 10 9 8 3 4 5 6 
10 3 1 5 7 6 2 8 4 9 
1 9 4 2 5 7 3 10 6 8 
forbidden 1 14
forbidden 1 18
forbidden 1 20
forbidden 2 12
forbidden 2 16
forbidden 2 17
forbidden 2 18
forbidden 2 19
forbidden 3 13
forbidden 3 14
forbidden 3 16
forbidden 3 18
forbidden 4 11
forbidden 4 15
forbidden 4 16
forbidden 4 17
forbidden 4 19
forbidden 5 11
forbidden 5 12
forbidden 5 15
forbidden 5 18
forbidden 5 20
forbidden 6 16
forbidden 6 17
forbidden 6 18
forbidden 7 14
forbidden 7 16
forbidden 7 18
forbidden 7 19
forbidden 7 20
forbidden 8 11
forbidden 8 13
forbidden 8 15
forbidden 8 18
forbidden 8 20
forbidden 9 12
forbidden 9 13
forbidden 9 17
forbidden 9 18
forbidden 9 20
forbidden 10 11
forbidden 10 12
forbidden 10 14
forbidden 10 16